Question

if sin theta is equals to 1 by root 3 then the cos theta is equals to​

Answer 1

Answer:

1/2. ...........................

Answer 2

Answer:

1/3

Step-by-step explanation:

given,

sin θ = 1/√3

squaring both sides

sin^2 θ = 1/3

now,

cos 2θ = 1 - 2(1/3)

cos 2θ = 1 - 2/3

cos 2θ = (3 - 2) / 3

cos 2θ = 1/3